package com.eatle.web.action.backend;
import java.awt.Color;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.InputStream;
import javax.imageio.ImageIO;
import javax.imageio.stream.ImageOutputStream;
import org.apache.struts2.ServletActionContext;
import com.eatle.utils.CreateVerificationCode;
import com.eatle.web.action.BaseAction;
public class VerifyCodeAction extends BaseAction
{
private static final long serialVersionUID = 4948574845742310L;
// 保存服务器端生成的验证码值（由com.eatle.utils.CreateVerificationCode.java产生验证码图片时赋值）
public static String verifyCode_s = "";
public InputStream getVerifyCode() throws Exception
{
// 验证码图片包装输出流
ByteArrayOutputStream baos = new ByteArrayOutputStream();
// 验证码图片输出流
ImageOutputStream iops = ImageIO.createImageOutputStream(baos);
// 将获取的验证码图片写到输出流
ImageIO.write(CreateVerificationCode.getNumCheckCode(75, 25,
new Color(255, 255, 255), new Color(255, 255, 255), 4, 0), "gif", iops);
// 以上面的输出流为源创建输入流
ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray());
// 将服务器端生成的验证码值存入Session
ServletActionContext.getRequest().getSession().setAttribute("verifyCode_s", verifyCode_s);
// 返回输入流
return bais;
}
}